For 2026, the round-trip ferry fare from St. Martin to St. Barts typically ranges between $105 and $120 USD for an adult. Leading operators like Great Bay Express (departing from Philipsburg) and Voyager (departing from Marigot) offer various tiers. A standard adult round-trip ticket is often around $109, while children aged 4–12 pay roughly $79, and toddlers under 4 often travel for free. In addition to the base ticket price, travelers must pay a mandatory port tax of $15 per person, which is usually collected in cash at the departure terminal. For those seeking more speed and comfort in 2026, premium class upgrades or private powerboat charters are available; a private day charter for a group can cost anywhere from $1,400 to $3,500 depending on the vessel's luxury level. Regardless of the ferry chosen, the crossing takes about 45 to 75 minutes depending on the sea conditions of the St. Barths Channel.